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123050530501 = 901113655591
BaseRepresentation
bin111001010011001100…
…0100001011011000101
3102202121121021121122121
41302212120201123011
54004001413434001
6132310103525541
711614210152223
oct1624630413305
9382547247577
10123050530501
11482048a8908
121ba214598b1
13b7b01b15c2
145d54543b13
153302bcb6a1
hex1ca66216c5

123050530501 has 4 divisors (see below), whose sum is σ = 123064195104. Its totient is φ = 123036865900.

The previous prime is 123050530459. The next prime is 123050530507. The reversal of 123050530501 is 105035050321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123050530501 - 217 = 123050399429 is a prime.

It is a super-2 number, since 2×1230505305012 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123050530507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6818785 + ... + 6836806.

It is an arithmetic number, because the mean of its divisors is an integer number (30766048776).

Almost surely, 2123050530501 is an apocalyptic number.

It is an amenable number.

123050530501 is a deficient number, since it is larger than the sum of its proper divisors (13664603).

123050530501 is an equidigital number, since it uses as much as digits as its factorization.

123050530501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13664602.

The product of its (nonzero) digits is 2250, while the sum is 25.

Adding to 123050530501 its reverse (105035050321), we get a palindrome (228085580822).

The spelling of 123050530501 in words is "one hundred twenty-three billion, fifty million, five hundred thirty thousand, five hundred one".

Divisors: 1 9011 13655591 123050530501